TARGAS-1 Operation Manual V. 1.02
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Averaging Setting
Averaging Setting
CO2 Avg Limit
Value Button
To select the CO
2
limit in which the CO
2
is being averaged. This only applies to
Absolute Mode.
Back Button
Returns to the Settings 2 Menu.
Running Average:
When in absolute mode only, an exponential running average filter can be applied to
smooth out small fluctuations while remaining sensitive to larger differences by using an Average Limit
value. Whenever a new reading differs from the current running average by more than the CO
2
Avg Limit
value, a new running average begins. Thus, when the CO
2
concentration is changing rapidly, averaging is
suspended and the instrument can track changes at the basic instrument data rate of 1 second. When the
CO
2
Avg Limit is set to 0, no running average is performed. The running average filter response time is
3.5 seconds to reach 66% of a new value, and 16 seconds to reach 99%. In other words, if Avg Limit is
set above 100 ppm and the inlet sample gas concentration instantaneously changed by 100 ppm, it would
take 4 seconds for the CO
2
reading to change by 66 ppm; then after 16 seconds, the measured value
would change by 99 ppm.
Interval Settings
Interval Settings
Host Button
To set the time interval between data writes to the Host Port (normally the USB
connection to an external PC). Time is in Seconds and the value 0 turns off data
writes. The default is 1.
Wifi Button
To set the time interval between data writes to the Wifi Port. Time is in Seconds
and the value 0 turns off data writes. The default is 0.
